Abstract
Given a set \(\mathcal {F}\) of graphs, a graph \(G\) is \(\mathcal {F}\)-free if \(G\) does not contain any member of \(\mathcal {F}\) as an induced subgraph. We say that \(\mathcal {F}\) is a degree-sequence-forcing set if, for each graph \(G\) in the class \(\mathcal {C}\) of \(\mathcal {F}\)-free graphs, every realization of the degree sequence of \(G\) is also in \(\mathcal {C}\). A degree-sequence-forcing set is minimal if no proper subset is degree-sequence-forcing. We characterize the non-minimal degree-sequence-forcing sets \(\mathcal {F}\) when \(\mathcal {F}\) has size \(3\).
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Barrus, M.D., Kumbhat, M., Hartke, S.G.: Graph classes characterized both by forbidden subgraphs and degree sequences. J. Graph Theory 57(2), 131–148 (2008)
Barrus, M.D., Hartke S.G.: Minimal forbidden sets for degree sequence characterizations (submitted)
Blázsik, Z., Hujter, M., Pluhár, A., Tuza, Z.: Graphs with no induced \(C_{4}\) and \(2K_{2}\). Discrete Math. 115(1–3), 51–55 (1993)
Chudnovsky, M., Robertson, N., Seymour, P.D., Thomas, R.: The strong perfect graph theorem. Ann. Math. (2) 164(1), 51–229 (2006)
Chvátal, V., Hammer, P.L.: Aggregation of inequalities in integer programming. In: Hammer, P.L., Johnson, E.L., Korte, B.H., Nemhauser, G.L. (eds.) Studies in Integer Programming, pp. 145–162. North-Holland, New York (1977)
Faudree, R.J., Gould, R.J., Jacobson, M.S., Lesniak, L.L.: Characterizing forbidden clawless triples implying Hamiltonian graphs. Discrete Math. 249(1–3), 71–81 (2002)
Faudree, R.J., Gould, R.J., Jacobson, M.S.: Forbidden triples implying hamiltonicity: for all graphs. Discuss. Math. Graph Theory 24(1), 47–54 (2004)
Földes, S., Hammer, P.L.: On split graphs and some related questions. In: Problèmes Combinatoires et Théorie Des Graphes, pp. 138–140. Colloques internationaux C.N.R.S. 260, Orsay (1976)
Fulkerson, D.R., Hoffman, A.J., McAndrew, M.H.: Some properties of graphs with multiple edges. Can. J. Math. 17, 166–177 (1965)
Gould, R.J., Łuczak, T., Pfender, F.: Pancyclity of 3-connected graphs: pairs of forbidden subgraphs. J. Graph Theory 47(3), 183–202 (2004)
Hammer, P.L., Ibaraki, T., Simeone, B.: Degree sequences of threshold graphs. In: Proceedings of the Ninth Southeastern Conference on Combinatorics, Graph Theory, and Computing, pp. 329–355. Florida Atlantic Univ., Boca Raton, Fla., 1978. Congress. Numer., XXI, Utilitas Math., Winnipeg, Man (1978)
Hammer, P.L., Simeone, B.: The splittance of a graph. Combinatorica 1, 275–284 (1981)
Kleitman, D.J., Li, S.-Y.: A note on unigraphic sequences. Stud. Appl. Math. 54(4), 283–287 (1975)
Maffray, F., Preissmann, M.: Linear recognition of pseudo-split graphs. Discrete Appl. Math. 52, 307–312 (1994)
Randerath, B.: 3-colorability and forbidden subgraphs. I. Characterizing pairs. Discrete Math. 276(1–3), 313–325 (2004)
West, D.B.: Introduction to Graph Theory. Prentice Hall Inc, Upper Saddle River (1996)
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Research partially supported by a Maude Hammond Fling Faculty Research Fellowship from the University of Nebraska Research Council, a Nebraska EPSCoR First Award, and National Science Foundation Grant DMS-0914815.
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Barrus, M.D., Hartke, S.G. & Kumbhat, M. Non-minimal Degree-Sequence-Forcing Triples. Graphs and Combinatorics 31, 1189–1209 (2015). https://doi.org/10.1007/s00373-014-1450-0
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DOI: https://doi.org/10.1007/s00373-014-1450-0
Keywords
- Degree-sequence-forcing set
- Forbidden subgraphs
- Degree sequence characterization
- 2-switch
- Potentially \(P\)-graphic
- Forcibly \(P\)-graphic